Junit java.lang.AssertionError: JSON路径"$.reward“

Question

我提供了一个测试方法，

@Test
    public void calculateReward() throws Exception {

        when(userService.findById(any(Long.class))).thenReturn(Optional.of(user));
        int steps = 1000;

        user.setCurrentSteps(steps);
        user.setTotalSteps(steps);

        when(userService.save(any(User.class))).thenReturn(user);
        Map<String, Double> map = new HashMap<>();
        map.put("EUR", 1.0);
        when(currencyUtilities.getCurrencyMap()).thenReturn(map);

        mockMvc.perform(put("/api/v1/users/calculateReward")
                .param("userId", String.valueOf(user.getId())))
                .andExpect(
                        status().isCreated()
                ).andExpect(
                content().contentType(MediaType.APPLICATION_JSON_UTF8)
        ).andDo(print())
                .andExpect(
                        jsonPath("$.name", is(user.getName()))
                ).andExpect(
                jsonPath("$.currency", is(user.getCurrencyName()))
        ).andExpect(
                jsonPath("$.reward", is(1.0)));
    }

我得到了错误消息，

java.lang.AssertionError: JSON path "$.reward"
Expected: is <1.0>
     but: was "1.00"
Expected :is <1.0>
Actual   :"1.00"

这里的问题是什么？

Answer 1

正如错误消息所说:测试期望在它收到的JSON (is(1.0))中看到数字1.0，但JSON实际上在该路径中包含字符串"1.00"。读取https://github.com/json-path/JsonPath以了解路径的含义，但$.reward只是根对象的"reward"字段。所以它应该看起来像

{
  "reward": 1.0,
  ... other fields including "name" and "currency"
}

但曾经是

{
  "reward": "1.00",
  ...
}